Happy birthday, Bush IAH

June 7, 2009 4:54:54 AM PDT

HOUSTON --

On Monday, one of Houston's popular gateways will be celebrating a big milestone. Bush Intercontinental Airport turns 40 years old tomorrow. The airport will celebrate by offering special discounts and give away prizes to some lucky passengers. There will also be a debut of a special video featuring former President George H.W. Bush.

The airport served more than 50 million passengers last year. It is ranked as the fourth largest multi-airport system, making it the sixth largest airport in the world.